ABSTRACT
The Al2(SO4)3⋅18H2O and Na2CO3 were used as raw materials. K2SO4 and Na2SO4 were used as molten salts. ZnSO4 or/and SnSO4 were added as morphology modifiers. All of the materials above were produced in Sinopharm Group Chemical Reagent Co., Ltd. and were 99.7% in purity.
